Looping in JavaScript Tutorial & Exercises

By @alesanchezr and other contributors at 4Geeks Academy

Estas instrucciones están disponibles en 🇪🇸 español 🇪🇸

Dozens of looping exercises to sharpen your looping skills with for, forEach, map, filter, looping an object, looping bidimentional arrays, adding conditions to loops, finding an element, and more!

Before you start... some related tutorials:

JavaScript for Beginners
Looping with JavaScript ← 🔥 You are here
JavaScript Functions
Master JavaScript

We need you! These exercises are built and maintained in collaboration with contributors such as yourself. If you find any bugs or misspellings please contribute and/or report them.

One click installation (recommended):

You can open these exercises in just a few seconds by clicking: Open in Codespaces (recommended) or Open in Gitpod.

Once you have VSCode open the LearnPack exercises should start automatically. If exercises don't run automatically you can try typing on your terminal: $ learnpack start

Local Installation

Install LearnPack, the package manager for learning tutorials and the HTML compiler plugin for LearnPack, make sure you also have node.js 14+:

$ npm i learnpack -g
$ learnpack plugins:install learnpack-node

Download this particular exercise using learnpack and navigate with cd into the folder:

$ learnpack download javascript-arrays-exercises
$ cd javascript-arrays-exercises

Note: Once you finish downloading, you will find an "exercises" folder that contains all the exercises within.

Start the tutorial/exercises by running the following command at the same level where your learn.json file is:

$ npm i jest@24.8.0 -g
$ learnpack start

How are the exercises organized?

Each exercise is a small React application containing the following files:

app.js: represents the entry JavaScript file that will be executed by the computer.
README.md: contains exercise instructions.
test.js: contains the testing script for the exercise (you don't have to open this file).

Note: The exercises have automatic grading, but it's very rigid and strict, my recommendation is to not take the tests too serious and use them only as a suggestion, or you may get frustrated.

Contributors

Thanks to these wonderful people (emoji key):

Alejandro Sanchez (alesanchezr), contribution: (coder) 💻 (idea) 🤔, (build-tests) ⚠️ , (pull-request-review) 👀 (build-tutorial) ✅ (documentation) 📖
Paolo (plucodev), contribution: (bug reports) 🐛, contribution: (coder), (translation) 🌎

This project follows the all-contributors specification. Contributions of any kind are welcome!